|“||Listen Moose, you're hot. Yes. My type? Definitely. But you've got more demons than The Exorcist. We're all on the spectrum, but my gay-o-meter says you should stick with what you know best... Girls.||”|
|— Kevin to Moose regarding their fling[src]|
Despite growing up in the same town, it is currently unclear how familiar Kevin and Moose were prior to the start of the series. However, they were at least aware of one another's presence.
Kevin approached Betty at the dance and informed her that Moose Mason propositioned him in the bathroom, and later, he was seen staring at Moose as he was standing with Reggie, but he was quickly pulled away by Betty. Kevin and Moose headed to Sweetwater River after the dance, and prepared to skinny dip. The two continued to flirt with one another. As Kevin teased Moose over his secrecy, Kevin tripped and saw Jason Blossom's body, discovering that he had been shot in the head. 
As Kevin and Betty walked the halls of Riverdale High School, she asked him if he was okay after being the one to find Jason's body. He replied that it was even more awkward having to explain to his father why he was with Moose during that time. During biology class, Moose insisted that he partner up with Kevin as the two had to talk about something. Kevin told Moose that he should stick with what he knew best - women. At lunch, Kevin talked about Moose with Betty and Veronica, commenting that he wasn't romantically interested in Moose because he already had a girlfriend, Midge Klump.
Deadly Days at Lovers' Lane
In the late hours of the night, Kevin passed over a bridge as he went deeper into Fox Forest. There, he met a young man of his liking. They were up against a tree, kissing and groping when several gun shots echoed throughout the forest. And while his male companion took off immediately, Kevin decided it would be best further investigate. He made his way through the woods, arriving at Lover's Lane to find Midge, climbing out the passengers side of Moose's car, screaming for help as she ran into Kevin's arms. Kevin would then learn that they were attacked a man wearing a black hood. Fortunately, Midge was unharmed due to Moose's heroic actions in using his own body to shield her from the gun fire.
The next day, Kevin visited Moose in the hospital. As both Archie and Betty had before him, Moose questioned what Kevin was doing in the woods, though Kevin didn't respond to the question, instead, turning the question back on Moose, asking what he was doing at Lover's Lane with Midge, other than drugs, which everyone had already been made aware of. Moose claimed that the Jingle Jangle was Midge's idea. While Moose liked Midge, he wasn't always sure that they were the greatest match. He then look to Kevin, who had a troubled look on his face. Kevin told Moose that he hadn't been making great decisions lately. He'd been lying to his father and going into the woods despite knowing the dangers he faced in doing so, almost as if he didn't even care. Moose explained that guys like them, in a town like Riverdale, didn't have many options. So, even if they risk certain danger in doing what they do, they go for it because of the slightest chance that they won't be alone for the smallest amount of time. Growing uncomfortable with the discussion, Kevin decided to leave. As he did so, Moose told him that he could come back whenever he felt like hanging out or talking.
Season 1 Screencaps
Season 2 Screencaps
- ↑ Aguirre-Sacasa, Roberto (writer) & Krieger, Lee Toland (director) (January 26, 2017). "Chapter One: The River's Edge". Riverdale. Season 1. Episode 1. The CW.
- ↑ Aguirre-Sacasa, Roberto (writer) & Krieger, Lee Toland (director) (February 2, 2017). "Chapter Two: A Touch of Evil". Riverdale. Season 1. Episode 2. The CW.
- ↑ Maxwell, Ross (writer) & Sullivan, Kevin (director) (October 25, 2017). "Chapter Sixteen: The Watcher in the Woods". Riverdale. Season 2. Episode 3. The CW.
- ↑ Boucher, Shepard (writer) & Seidenglanz, Rob (director) (December 13, 2017). "Chapter Twenty-Two: Silent Night, Deadly Night". Riverdale. Season 2. Episode 9. The CW.